Liebert Nfinity 208 User Manual
English
4 to 16 kVA
Power System
208 V / 240 V 60Hz
User Manual
IMPORTANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS.
This manual contains important instructions that
should be closely followed during installation
and maintenance of this UPS unit and during the
installation and replacement of power and
battery modules.
This product is designed for Commercial /
Industrial use only. This product is not intended
for use with life support and other U.S. FDA
designated “critical” devices. Maximum load
must not exceed that shown on the UPS rating
label. See Limited Warranty.
WARNING: Lethal voltages may be present
within this unit even when it is apparently not
operating. Observe all cautions and warnings in
this manual. Failure to do so MAY result in
serious injury or death. Never work alone.
Observe the following precautions when working
with batteries:
§ CAUTION: DO NOT dispose of battery
modules in a fire; the battery module may
explode.
§ CAUTION: DO NOT open or mutilate
batteries; released electrolyte is harmful to
skin and eyes, and may be toxic.
§ CAUTION: A battery can present a risk of
electrical shock and high short circuit
current. The following precautions should
be observed when working on batteries:
§ Remove watches, rings or other metal
objects.
§ Use tools with insulated handles.
§ CAUTION: Lead-acid batteries contain
hazardous toxic materials. Handle,
transport, and recycle in accordance with
local regulations.
This UPS is designed for use on a properly
grounded (earthed), 208/240 VAC, 60Hz supply,
and is to be installed by qualified personnel.
ELECTROMAGNETIC COMPATIBILITY - The
Nfinity™ UPS complies with the limits for a
Class A digital device, pursuant to Part 15 of
FCC rules. These limits provide reasonable
protection against harmful interference in a
commercial environment. This device
generates, uses, and radiates radio frequency
energy and, if not installed and used in
accordance with the instruction manual, may
cause harmful interference to radio
communications. Operating this device in a
residential area is likely to cause harmful
interference, which the user must correct at their
own expense.
Operate the UPS in an indoor environment only
in an ambient temperature range of 0°C to
+40°C (32°F to +104°F). Install it in a clean
environment, free from conductive
contaminates, moisture, flammable liquids,
gasses, or corrosive substances.
Turn the UPS off and isolate the UPS before
cleaning. Use only a soft cloth, never liquid or
aerosol cleaners. Keep the front and rear vents
free of dust accumulation that could restrict
airflow.
Never block or insert any object into the
ventilation holes or other openings.
This UPS contains user replaceable modules.
No attempts should be made to access the
interior of any module. See troubleshooting
section on module replacement.
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Glossary of Symbols
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Introduction
General Description
Modes of Operation
Major Components
General Description
Congratulations on your purchase of Liebert’s
Nfinity™ Uninterruptible Power System. As with
every Liebert product, we stand behind our
quality. If you have any questions concerning
this UPS, please feel free to contact your local
sales representative, or call the appropriate
Technical Support number listed in the back of
this manual.
To ensure proper installation and operation of
this unit, please read this manual thoroughly.
SYSTEM DESCRIPTION
The Liebert Nfinity Power System is a modular
UPS intended for use with workstations, servers,
network, telecom or other sensitive electronic
equipment. It provides continuous, high-quality
AC power to your equipment, protecting it from
any power disturbance due to blackouts,
brownouts, surges or noise interference.
The Nfinity modular UPS was designed to
provide maximum system availability to business
critical equipment. Nfinity is also an easily
adaptable UPS system. By simply installing
additional power or battery modules you can
expand your current system capacity or extend
your back-up runtime.
Nfinity has a comprehensive user interface that
can be configured according to the user’s
preference. It also informs the user of details on
the status of the UPS, and keeps a log of
events.
FEATURES:
§ Up to 16 kVA of modular back-up
power
§ Continuous power conditioning
§ A user-friendly interface for custom
configuration
§ Continuous system monitoring
§ Warning alarms and event logs
STANDARD COMPONENTS:
§ Power Modules – for power
conditioning
§ Battery Modules – for back-up power
§ System Control Modules – for system
monitoring and communications
§ LCD display for comprehensive user
indications and programmable controls
§ Output transformer for isolation
COMMUNICATIONS
§ Dry contacts
§ RS-232
§ Optional communications via
Intellislot™ communication ports
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Modes of Operation
The Nfinity UPS is designed to operate as a true
on-line system in the following modes:
Normal Mode
The Power Module rectifiers derive power from a
utility AC source and supplies regulated DC
power to the inverter. The module’s inverter
regenerates precise AC power to supply the
connected equipment. The battery charger
maintains a float-charge on the battery.
Back-Up Mode
When AC utility fails, the connected equipment
is supplied power by the inverter, which obtains
energy from the battery modules. The output
power equipment will not be interrupted during
the failure or restoration of the AC utility source.
Auto Restart Mode
After a power outage and complete battery
discharge, once the AC utility is restored, the
UPS will automatically restart and resume
supplying power to the connected equipment.
This feature is enabled at the factory, but can be
disabled by the user. The user can also
program two auto restart delay settings:
1. Battery capacity level (%)
2. Countdown timer
Recharge Mode
When AC utility is restored, the unit will then
automatically recharge the battery modules until
they are fully charged.
Bypass Mode
The bypass provides an alternate path for power
to the connected equipment that operates in the
following manner:
Automatic
In the event of an internal failure or should
the inverter overload capacity be exceeded,
the UPS performs an automatic transfer of
the connected equipment from the inverter
to the bypass source.
Manual
Should the UPS need to be taken out of
service for limited maintenance or repair,
manual activation of the bypass will cause
an immediate transfer of the equipment from
the inverter to the bypass source.
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Major Components
The following is a general description
of each component and its functions.
Please review this section carefully, as
it will give you a better understanding
as to how Nfinity operates.
Unit Frame
Nfinity’s frame houses all of the other
system components. Looking at the
front of Nfinity™, one will see a series
of plastic bezels. By grabbing these
bezels from the side and pulling out,
you will remove the bezel to reveal the
Battery / Power Module bays. The
bottom bezel covers the cooling fans
and the Manual Bypass Switch.
The User Interface Module is located
above the Power / Battery Module bays
for easy access. From here the user
may find out various information about
Nfinity’s condition. By moving the User
Interface and setting it on top of the
frame, you will see the System Control
Module bays.
Nfinity’s frame with bezels removed
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User Interface Module
The User Interface Module is the primary source of
communication between the UPS and the user.
From the interface, the user can:
§ View the status of the UPS
§ Custom configure the system
§ Review the event log to assist with
troubleshooting
§ Enable / disable the output power
§ Silence the audible alarm
For a more detailed explanation on how to operate
the User Interface module, see the Controls and
Indicators section of this manual.
System Control Module
User Interface Module
System Control Module
The System Control Module is the
communicative backbone of the UPS. It
gathers input from all modules and processes
the data to control the operation of the
system – including monitoring the condition of
each module. An optional second System
Control Module can be installed to provide full
system functionality (operation and
communication), in the unlikely event a
Control Module should fail.
Under normal operation, the Status LED
(green) will blink and the Fault LED (amber)
will be off. For any condition other than this,
check the Troubleshooting section of this
manual.
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Power Module
Under Normal Operation, the Status LED (green) will blink and the Fault LED (amber) will be off. For any
The Power Module maintains the condition of
power in the Nfinity UPS. Each module is an
independent 4-kVA unit, consisting of a power
factor corrected rectifier, battery charger, and
inverter, with associated monitoring and controlcircuitry. The modules are paralleled to provide
greater capacity and/or redundancy. Modules
may be added or replaced on-line with no
interruption or danger to the connected
equipment.
Battery Module
The Battery Modules provide back-up power in
the event of input utility failure. Each module
contains a quantity of ten individual 12-volt valve
regulated (VRLA) battery blocks with associated
monitoring and controls to isolate the battery
module in the event of a battery failure. The
modules are paralleled to provide greater backup time and/or redundancy. Modules may be
added or replaced on-line with no interruption or
danger to the connected equipment.
Power Module Battery Module
condition other than this, check the Troubleshooting section of this manual.
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Installation
Preparation
Unloading
Cable Installation
Communications
Preparation
These installation instructions provide all the
information needed for positioning the UPS
(including environmental requirements) and for
connecting the input and output power cables.
Inspection
Upon receiving the UPS, examine the packaging
for any signs of mishandling or damage. If any
damage is noted, call your local Liebert
representative and/or notify your carrier.
Environment
Note: Operating in temperatures above 77° F
(25° C) will reduce battery life. The UPS
environment must be free of conductive
contaminants and excessive moisture (water
condensation, flammable vapors, chemical
fumes, or corrosive gasses and liquids).
Required Setup Equipment
The tools below are required in order to properly
setup your UPS:
§ Pallet jack
Site Preparation
When deciding where to locate your UPS,
consider the weight and size of the unit. Make
sure that the structural integrity of the floor can
withstand the weight of a fully loaded unit. Refer
to the table below for size and fully populated
weight considerations:
Model Max Weight H x W x D
8 bay 871 40” x 20” x 28”
12 bay 1186 53” x 20” x 28”
Check to make sure that your UPS will be
located in a well-ventilated area with at least 12
inches behind it. The UPS is force cooled with
the aid of internal cooling fans. Cooling air
enters from the front of the UPS and is
exhausted through ventilation grills in the back.
It should also have at least 36 inches in front, in
order to change modules when necessary.
§ 1/2” (13mm) ratchet or wrench
§ Torque Wrench (in / lb)
§ Flathead Screwdriver
§ #2 Phillips Screwdriver
The unit frame is bolted to the shipping pallet to
ensure safety. It is recommended that a pallet
jack be used to transport the unit to its operating
location (prior to unbolting the unit).
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Unloading
Unloading the UPS
CAUTION: This UPS is very heavy (see weight
on previous page). At least two people should
be present to unload it off of the pallet.
1. Once the UPS is near the desired operating
location, remove the cardboard cover.
2. Use a ratchet (1/2” or 13mm) or open-ended
wrench to remove the four mounting bolts
from the pallet brackets. Remove mounting
brackets from the pallet and UPS. Keep
brackets for future transportation of UPS, or
for additional stability once in place.
3. Remove the metal ramp from the bottom of
the UPS, rotating it. Fit ramp in pallet slot as
shown above.
4. Using two people, slowly move the UPS
down the ramp until the UPS is on level
ground.
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